/* $OpenBSD: ipx_usrreq.c,v 1.2 1996/10/26 09:34:55 mickey Exp $ */ /*- * * Copyright (c) 1996 Michael Shalayeff * Copyright (c) 1995, Mike Mitchell * Copyright (c) 1984, 1985, 1986, 1987, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)ipx_usrreq.c * * from FreeBSD Id: ipx_usrreq.c,v 1.5 1996/03/11 15:13:57 davidg Exp */ #include <sys/param.h> #include <sys/queue.h> #include <sys/systm.h> #include <sys/malloc.h> #include <sys/mbuf.h> #include <sys/protosw.h> #include <sys/socket.h> #include <sys/socketvar.h> #include <sys/errno.h> #include <sys/stat.h> #include <net/if.h> #include <net/route.h> #include <netinet/in.h> #include <netipx/ipx.h> #include <netipx/ipx_pcb.h> #include <netipx/ipx_if.h> #include <netipx/ipx_var.h> #include <netipx/ipx_error.h> #include <netipx/ipx_ip.h> #include <machine/stdarg.h> /* * IPX protocol implementation. */ int noipxRoute; /* * This may also be called for raw listeners. */ void #if __STDC__ ipx_input(struct mbuf *m, ...) #else ipx_input(m, va_alist) struct mbuf *m; va_decl #endif { register struct ipxpcb *ipxp; register struct ipx *ipx = mtod(m, struct ipx *); struct ifnet *ifp = m->m_pkthdr.rcvif; struct sockaddr_ipx ipx_ipx = { sizeof(ipx_ipx), AF_IPX }; va_list ap; va_start(ap, m); ipxp = va_arg(ap, struct ipxpcb *); va_end(ap); if (ipxp == NULL) panic("No ipxpcb"); /* * Construct sockaddr format source address. * Stuff source address and datagram in user buffer. */ ipx_ipx.sipx_addr = ipx->ipx_sna; if (ipx_neteqnn(ipx->ipx_sna.ipx_net, ipx_zeronet) && ifp) { register struct ifaddr *ifa; for (ifa = ifp->if_addrlist.tqh_first; ifa; ifa = ifa->ifa_list.tqe_next) { if (ifa->ifa_addr->sa_family == AF_IPX) { ipx_ipx.sipx_addr.ipx_net = IA_SIPX(ifa)->sipx_addr.ipx_net; break; } } } ipxp->ipxp_rpt = ipx->ipx_pt; if ( ! (ipxp->ipxp_flags & IPXP_RAWIN) ) { m->m_len -= sizeof (struct ipx); m->m_pkthdr.len -= sizeof (struct ipx); m->m_data += sizeof (struct ipx); } if (sbappendaddr(&ipxp->ipxp_socket->so_rcv, (struct sockaddr *)&ipx_ipx, m, (struct mbuf *)0) == 0) goto bad; sorwakeup(ipxp->ipxp_socket); return; bad: m_freem(m); } void ipx_abort(ipxp) struct ipxpcb *ipxp; { struct socket *so = ipxp->ipxp_socket; ipx_pcbdisconnect(ipxp); soisdisconnected(so); } /* * Drop connection, reporting * the specified error. */ /* struct ipxpcb * DELETE THIS */ void ipx_drop(ipxp, errno) register struct ipxpcb *ipxp; int errno; { struct socket *so = ipxp->ipxp_socket; /* * someday, in the xerox world * we will generate error protocol packets * announcing that the socket has gone away. */ /*if (TCPS_HAVERCVDSYN(tp->t_state)) { tp->t_state = TCPS_CLOSED; (void) tcp_output(tp); }*/ so->so_error = errno; ipx_pcbdisconnect(ipxp); soisdisconnected(so); } int #if __STDC__ ipx_output(struct mbuf *m0, ...) #else ipx_output(m0, va_alist) struct mbuf *m0; va_decl #endif { register struct mbuf *m; register struct ipx *ipx; struct ipxpcb *ipxp; register struct socket *so; register int len = 0; register struct route *ro; struct mbuf *mprev = NULL; va_list ap; va_start(ap, m0); ipxp = va_arg(ap, struct ipxpcb *); va_end(ap); /* * Calculate data length. */ for (m = m0; m; m = m->m_next) { mprev = m; len += m->m_len; } /* * Make sure packet is actually of even length. */ if (len & 1) { m = mprev; if ((m->m_flags & M_EXT) == 0 && (m->m_len + m->m_data < &m->m_dat[MLEN])) { m->m_len++; } else { struct mbuf *m1 = m_get(M_DONTWAIT, MT_DATA); if (m1 == 0) { m_freem(m0); return (ENOBUFS); } m1->m_len = 1; * mtod(m1, char *) = 0; m->m_next = m1; } m0->m_pkthdr.len++; } /* * Fill in mbuf with extended IPX header * and addresses and length put into network format. */ m = m0; if (ipxp->ipxp_flags & IPXP_RAWOUT) { ipx = mtod(m, struct ipx *); } else { M_PREPEND(m, sizeof (struct ipx), M_DONTWAIT); if (m == 0) return (ENOBUFS); ipx = mtod(m, struct ipx *); ipx->ipx_tc = 0; ipx->ipx_pt = ipxp->ipxp_dpt; ipx->ipx_sna = ipxp->ipxp_laddr; ipx->ipx_dna = ipxp->ipxp_faddr; len += sizeof (struct ipx); } ipx->ipx_len = htons((u_short)len); if (ipxcksum) { ipx->ipx_sum = 0; len = ((len - 1) | 1) + 1; ipx->ipx_sum = ipx_cksum(m, len); } else ipx->ipx_sum = 0xffff; /* * Output datagram. */ so = ipxp->ipxp_socket; if (so->so_options & SO_DONTROUTE) return (ipx_outputfl(m, (struct route *)0, (so->so_options & SO_BROADCAST) | IPX_ROUTETOIF)); /* * Use cached route for previous datagram if * possible. If the previous net was the same * and the interface was a broadcast medium, or * if the previous destination was identical, * then we are ok. * * NB: We don't handle broadcasts because that * would require 3 subroutine calls. */ ro = &ipxp->ipxp_route; #ifdef ancient_history /* * I think that this will all be handled in ipx_pcbconnect! */ if (ro->ro_rt) { if(ipx_neteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) { /* * This assumes we have no GH type routes */ if (ro->ro_rt->rt_flags & RTF_HOST) { if (!ipx_hosteq(ipxp->ipxp_lastdst, ipx->ipx_dna)) goto re_route; } if ((ro->ro_rt->rt_flags & RTF_GATEWAY) == 0) { register struct ipx_addr *dst = &satoipx_addr(ro->ro_dst); dst->ipx_host = ipx->ipx_dna.ipx_host; } /* * Otherwise, we go through the same gateway * and dst is already set up. */ } else { re_route: RTFREE(ro->ro_rt); ro->ro_rt = (struct rtentry *)0; } } ipxp->ipxp_lastdst = ipx->ipx_dna; #endif /* ancient_history */ if (noipxRoute) ro = 0; return (ipx_outputfl(m, ro, so->so_options & SO_BROADCAST)); } /* ARGSUSED */ int ipx_ctloutput(req, so, level, name, value) int req, level; struct socket *so; int name; struct mbuf **value; { register struct mbuf *m; struct ipxpcb *ipxp = sotoipxpcb(so); int mask, error = 0; /*extern long ipx_pexseq;*/ /*XXX*//*JRE*/ if (ipxp == NULL) return (EINVAL); switch (req) { case PRCO_GETOPT: if (value==NULL) return (EINVAL); m = m_get(M_DONTWAIT, MT_DATA); if (m==NULL) return (ENOBUFS); switch (name) { case SO_ALL_PACKETS: mask = IPXP_ALL_PACKETS; goto get_flags; case SO_HEADERS_ON_INPUT: mask = IPXP_RAWIN; goto get_flags; case SO_HEADERS_ON_OUTPUT: mask = IPXP_RAWOUT; get_flags: m->m_len = sizeof(short); *mtod(m, short *) = ipxp->ipxp_flags & mask; break; case SO_DEFAULT_HEADERS: m->m_len = sizeof(struct ipx); { register struct ipx *ipx = mtod(m, struct ipx *); ipx->ipx_len = 0; ipx->ipx_sum = 0; ipx->ipx_tc = 0; ipx->ipx_pt = ipxp->ipxp_dpt; ipx->ipx_dna = ipxp->ipxp_faddr; ipx->ipx_sna = ipxp->ipxp_laddr; } break; case SO_SEQNO: m->m_len = sizeof(long); *mtod(m, long *) = ipx_pexseq++; break; default: error = EINVAL; } *value = m; break; case PRCO_SETOPT: switch (name) { int *ok; case SO_ALL_PACKETS: mask = IPXP_ALL_PACKETS; goto set_head; case SO_HEADERS_ON_INPUT: mask = IPXP_RAWIN; goto set_head; case SO_HEADERS_ON_OUTPUT: mask = IPXP_RAWOUT; set_head: if (value && *value) { ok = mtod(*value, int *); if (*ok) ipxp->ipxp_flags |= mask; else ipxp->ipxp_flags &= ~mask; } else error = EINVAL; break; case SO_DEFAULT_HEADERS: { register struct ipx *ipx = mtod(*value, struct ipx *); ipxp->ipxp_dpt = ipx->ipx_pt; } break; #ifdef IPXIP case SO_IPXIP_ROUTE: error = ipxip_route(*value); break; #endif /* IPXIP */ #ifdef IPXTUNNEL case SO_IPXTUNNEL_ROUTE: error = ipxtun_route(*value); break; #endif default: error = EINVAL; } if (value && *value) m_freem(*value); break; } return (error); } /*ARGSUSED*/ int ipx_usrreq(so, req, m, nam, control) struct socket *so; int req; struct mbuf *m, *nam, *control; { struct ipxpcb *ipxp = sotoipxpcb(so); int error = 0; if (req == PRU_CONTROL) return (ipx_control(so, (int)m, (caddr_t)nam, (struct ifnet *)control)); if (control && control->m_len) { error = EINVAL; goto release; } if (ipxp == NULL && req != PRU_ATTACH) { error = EINVAL; goto release; } switch (req) { case PRU_ATTACH: if (ipxp != NULL) { error = EINVAL; break; } error = ipx_pcballoc(so, &ipxcbtable); if (error) break; error = soreserve(so, (u_long) 2048, (u_long) 2048); if (error) break; break; case PRU_DETACH: if (ipxp == NULL) { error = ENOTCONN; break; } ipx_pcbdetach(ipxp); break; case PRU_BIND: error = ipx_pcbbind(ipxp, nam); break; case PRU_LISTEN: error = EOPNOTSUPP; break; case PRU_CONNECT: if (!ipx_nullhost(ipxp->ipxp_faddr)) { error = EISCONN; break; } error = ipx_pcbconnect(ipxp, nam); if (error == 0) soisconnected(so); break; case PRU_CONNECT2: error = EOPNOTSUPP; break; case PRU_ACCEPT: error = EOPNOTSUPP; break; case PRU_DISCONNECT: if (ipx_nullhost(ipxp->ipxp_faddr)) { error = ENOTCONN; break; } ipx_pcbdisconnect(ipxp); soisdisconnected(so); break; case PRU_SHUTDOWN: socantsendmore(so); break; case PRU_SEND: { struct ipx_addr laddr; int s = 0; if (nam) { laddr = ipxp->ipxp_laddr; if (!ipx_nullhost(ipxp->ipxp_faddr)) { error = EISCONN; break; } /* * Must block input while temporarily connected. */ s = splnet(); error = ipx_pcbconnect(ipxp, nam); if (error) { splx(s); break; } } else { if (ipx_nullhost(ipxp->ipxp_faddr)) { error = ENOTCONN; break; } } error = ipx_output(m, ipxp); m = NULL; if (nam) { ipx_pcbdisconnect(ipxp); splx(s); ipxp->ipxp_laddr.ipx_host = laddr.ipx_host; ipxp->ipxp_laddr.ipx_port = laddr.ipx_port; } } break; case PRU_ABORT: ipx_pcbdetach(ipxp); sofree(so); soisdisconnected(so); break; case PRU_SOCKADDR: ipx_setsockaddr(ipxp, nam); break; case PRU_PEERADDR: ipx_setpeeraddr(ipxp, nam); break; case PRU_SENSE: /* * stat: don't bother with a blocksize. */ return (0); case PRU_SENDOOB: case PRU_FASTTIMO: case PRU_SLOWTIMO: case PRU_PROTORCV: case PRU_PROTOSEND: error = EOPNOTSUPP; break; case PRU_CONTROL: case PRU_RCVD: case PRU_RCVOOB: return (EOPNOTSUPP); /* do not free mbuf's */ default: panic("ipx_usrreq"); } release: if (control != NULL) m_freem(control); if (m != NULL) m_freem(m); return (error); } /*ARGSUSED*/ int ipx_raw_usrreq(so, req, m, nam, control) struct socket *so; int req; struct mbuf *m, *nam, *control; { int error = 0; struct ipxpcb *ipxp = sotoipxpcb(so); /*extern struct ipxpcb ipxrawpcb;*//*XXX*//*JRE*/ switch (req) { case PRU_ATTACH: if (!(so->so_state & SS_PRIV) || (ipxp != NULL)) { error = EINVAL; break; } error = ipx_pcballoc(so, &ipxrawcbtable); if (error) break; error = soreserve(so, (u_long) 2048, (u_long) 2048); if (error) break; ipxp = sotoipxpcb(so); ipxp->ipxp_faddr.ipx_host = ipx_broadhost; ipxp->ipxp_flags = IPXP_RAWIN | IPXP_RAWOUT; break; default: error = ipx_usrreq(so, req, m, nam, control); } return (error); }